Close your eyes at any given moment, and you're likely to hear an audio artifact or two—whether the boo-dah-ling of a text message or the clacking of a keyboard. But as this new sound collage reminds us, hundreds of once-familiar audio cues are now doomed to obscurity, thanks to technology's forward march.

The video, put out by Good, gives us a chronological tour of the noises that emanated from all sorts of communication devices, running the gamut from typewriters and telegrams. Many of the sounds are now all but extinct. It's a great reminder of the role of sound in our culture, and it's also kind of a relaxing beat to bob along to! [Youtube via Digg]